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Electric Fan start temp question **Updated question**

opfor2

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Well I finnaly did it. I bought a new Flex-a-lite # 292 electric fan for my stock 90 K-5 Blazer with TBI-350 with a 195' thermostat. My question is at what temp did you adjust your adjustable fan controler to turn the fan on? What would be the "Ideal" turn on turn off temp?

thanks

Dan
 
Last edited:
That question is dependent on what degree temperature sensor is being used.
 
My flex-alite is adjustable to whatever temp you want it to come on at. I have mine set around 190, any lower than that and it seemed to kick in and out ALOT!
 
highrlr said:
My flex-alite is adjustable to whatever temp you want it to come on at. I have mine set around 190, any lower than that and it seemed to kick in and out ALOT!

True that, mine will come with the new and improved adustable sensor, so i'm trying to get an idea as to were to set it. I downloaded the installation sheet and it really dosen't give any information as to what the "Ideal" setting would be.

Dan..
 
As an example, GM set the fans to come on at about 25* above the thermostat temp.

I assume part of their cooling strategy is based on how efficient the cooling system is. Trying to keep a vehicle with a 195* stat at 195* at idle is possible if the cooling system is efficient, but it's going to be much harder on the cooling system as a whole to keep it at 195* than it is at a somewhat higher temp.
 
Run the truck. Feel the upper hose. When it gets hot (thermostat opened), turn the knob till the fan turns on. Voila.
 
I'm running a 180 thermostat and have the controller for the fan set to turn on at 195. Seems to be working without any problems.
 
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